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Coherent photoproduction of $J/\psi$ in nucleus-nucleus collisions \\in the color dipole approach- an update
by Agnieszka {\L}uszczak and Wolfgang Sch{\"a}fer
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Submission summary
| Authors (as registered SciPost users): | Agnieszka Luszczak |
| Submission information | |
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| Preprint Link: | scipost_202108_00059v1 (pdf) |
| Date submitted: | 2021-08-24 15:28 |
| Submitted by: | Luszczak, Agnieszka |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
Abstract
We discuss the role of $c \bar c g$-Fock states in the diffractive photoproduction of $J/\psi$-mesons. We build on our earlier description of the process in the color-dipole approach, where we took into account the rescattering of $c \bar c$ pairs using a Glauber-Gribov form of the dipole-nucleus amplitude. We compare the results of our calculations to recent data on the photoproduction of $J/\psi$ by the ALICE and LHCb collaborations.
Current status:
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2022-2-19 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202108_00059v1, delivered 2022-02-19, doi: 10.21468/SciPost.Report.4471
Report
The manuscript presents the diffractive photoproduction of $J/\psi$ mesons in ultraperipheral heavy-ion collisions in the color dipole approach. The updated results account for higher Fock-states in the color dipole formalism. These results are compared with the photoproduction of $J/\psi$ in ultraperipheral lead-lead collisions at $\sqrt{s_{NN}}= 2.76$ and $\sqrt{s_{NN}}= 5.02$ TeV.
Higher Fock-states improves the agreement of the dipole approach with the data points which are taken from the ALICE Collaboration at midrapidity.
The text is well-written and worth publishing.
Minor comments:
$\bullet$ on page 5, Figure 3: cross section fro the $\rightarrow$ cross section for the
$+$ here, in the Figure 3, it might be worth mentioning what the references are for those data points.